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高信賴性觸控方案
一般觸控式面板的透光度以全光譜的測試儀器或以光波長550nm 的儀器測量出來為78% – 81%，這是過去十幾年一般電阻式觸控面板產品規格。若放在某些亮度較低的LCD 面板前，或是在比較亮的環境中，往往造成使用者看不清楚LCD 螢幕的訊息。AMT 高穿透式觸控面板(High Light Transmission, HLT) 可以讓光穿透度增高為85%，其原理是在ITO 玻璃與ITO 膜鍍上AR (Anti-Reflective) 層來增加光穿透度的效果，讓低照度的LCD 訊息可以被看清楚一點。而在高穿透率的觸控面板上依照不同的玻璃厚度及鍍的AR膜程度，可以決定光的穿透度。
高穿透式觸控面板其不同的光穿透度，使用不同厚度的玻璃，穿透率如下表：
Glass Thickness
Light Transmission Rate
1.1 mm glass
85%
1.8 mm glass
84.5%
Specifications
Optical
· Surface finish: Antiglare or Clear
· Light transmission: 85%
Mechanical
· Sizes: 3″ to 19″ diagonal size
· ITO glass thickness: 1.1mm and 1.8mm
· Tail design: FPC type, Integral tail or others
· Tail terminator: ZIF, Berg, AMP, AMP compatible or others
· Input method: finger, gloved, stylus
· Activation force: 0.1N to 1.0N depending on design
· Surface hardness: 3H
Environmental
· Operating temperature: -20℃ to +70℃
· Storage temperature: -40℃ to +80℃
· Operating humidity:
· if temp. ≧ 40°C, humidity less than 80% RH
· if temp. < 40°C, humidity less than 90% RH
· No dew condensation
· Storage humidity: ambient humidity
Electrical
· Insulation resistance: 10M ohm@25V DC
· Linearity:
· < 1.5% for 4-, 8-wire touch
· < 1.0% for 5-wire touch inner area
· < 1.5% for 5-wire touch perimeter area
· Contact bounce:
· < 10ms for 4-, 8-wire touch
· < 15ms for 5-wire touch
· Operating voltage: 5.5 V
· Contact current: 70mA (maximum)
